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Speed up rendering by caching context pointer ##cons

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This commit is contained in:
Paul B Mahol 2022-07-31 15:34:43 +02:00 committed by pancake
parent 02989468cd
commit a9badb01ce
1 changed files with 34 additions and 25 deletions
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59
libr/cons/cons.c
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@ -837,14 +837,15 @@ R_API void r_cons_clear(void) {
}
R_API void r_cons_reset(void) {
if (C->buffer) {
C->buffer[0] = '\0';
RConsContext *c = C;
if (c->buffer) {
c->buffer[0] = '\0';
}
C->buffer_len = 0;
c->buffer_len = 0;
I->lines = 0;
I->lastline = C->buffer;
cons_grep_reset (&C->grep);
C->pageable = true;
I->lastline = c->buffer;
cons_grep_reset (&c->grep);
c->pageable = true;
}
R_API const char *r_cons_get_buffer(void) {
@ -1110,9 +1111,10 @@ R_API void r_cons_flush(void) {
}
} else if (I->maxpage > 0 && C->buffer_len > I->maxpage) {
#if COUNT_LINES
char *buffer = C->buffer;
int i, lines = 0;
for (i = 0; C->buffer[i]; i++) {
if (C->buffer[i] == '\n') {
for (i = 0; buffer[i]; i++) {
if (buffer[i] == '\n') {
lines ++;
}
}
@ -1499,14 +1501,15 @@ now the console color is reset with each \n (same stuff do it here but in correc
/* return the aproximated x,y of cursor before flushing */
// XXX this function is a huge bottleneck
R_API int r_cons_get_cursor(int *rows) {
RConsContext *c = C;
int i, col = 0;
int row = 0;
// TODO: we need to handle GOTOXY and CLRSCR ansi escape code too
for (i = 0; i < C->buffer_len; i++) {
for (i = 0; i < c->buffer_len; i++) {
// ignore ansi chars, copypasta from r_str_ansi_len
if (C->buffer[i] == 0x1b) {
char ch2 = C->buffer[i + 1];
char *str = C->buffer;
if (c->buffer[i] == 0x1b) {
char ch2 = c->buffer[i + 1];
char *str = c->buffer;
if (ch2 == '\\') {
i++;
} else if (ch2 == ']') {
@ -1518,7 +1521,7 @@ R_API int r_cons_get_cursor(int *rows) {
;
}
}
} else if (C->buffer[i] == '\n') {
} else if (c->buffer[i] == '\n') {
row++;
col = 0;
} else {
@ -2042,8 +2045,10 @@ R_API void r_cons_highlight(const char *word) {
}
R_API char *r_cons_lastline(int *len) {
char *b = C->buffer + C->buffer_len;
while (b > C->buffer) {
RConsContext *c = C;
char *start = c->buffer;
char *b = start + c->buffer_len;
while (b > start) {
b--;
if (*b == '\n') {
b++;
@ -2051,8 +2056,8 @@ R_API char *r_cons_lastline(int *len) {
}
}
if (len) {
int delta = b - C->buffer;
*len = C->buffer_len - delta;
int delta = b - start;
*len = c->buffer_len - delta;
}
return b;
}
@ -2060,16 +2065,18 @@ R_API char *r_cons_lastline(int *len) {
// same as r_cons_lastline(), but len will be the number of
// utf-8 characters excluding ansi escape sequences as opposed to just bytes
R_API char *r_cons_lastline_utf8_ansi_len(int *len) {
RConsContext *c = C;
if (!len) {
return r_cons_lastline (0);
}
char *b = C->buffer + C->buffer_len;
char *start = c->buffer;
char *b = start + c->buffer_len;
int l = 0;
int last_possible_ansi_end = 0;
char ch = '\0';
char ch2;
while (b > C->buffer) {
while (b > start) {
ch2 = ch;
ch = *b;
@ -2120,21 +2127,23 @@ R_API char *r_cons_swap_ground(const char *col) {
}
R_API bool r_cons_drop(int n) {
if (n > C->buffer_len) {
C->buffer_len = 0;
RConsContext *c = C;
if (n > c->buffer_len) {
c->buffer_len = 0;
return false;
}
C->buffer_len -= n;
c->buffer_len -= n;
return true;
}
R_API void r_cons_chop(void) {
while (C->buffer_len > 0) {
char ch = C->buffer[C->buffer_len - 1];
RConsContext *c = C;
while (c->buffer_len > 0) {
char ch = c->buffer[c->buffer_len - 1];
if (ch != '\n' && !IS_WHITESPACE (ch)) {
break;
}
C->buffer_len--;
c->buffer_len--;
}
}